<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">

    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="http://cdn.bootcss.com/html5shiv/3.7.2/html5shiv.min.js"></script>
    <script src="http://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
    <style>
        div{
            width: 100px;
            height: 100px;
            margin-top: 10px;
            background: pink;
        }
        span{
            width: 100px;
            height: 100px;
            margin-top: 10px;
            background: pink;
        }
    </style>
</head>
<body>
<!--行内元素和块状元素的区别-->
<!--
    块状元素独占一行，默认情况下，宽度自动填满父元素宽度
    行内元素默认不分行
    行内元素宽高不能由css决定，而是由内容决定的
    行内元素的margin和padding的垂直方向上不产生边距效果
    可以使用display:block;或display:inline;实现块级元素和行内元素的相互转换
-->
<div></div>
<div></div>
<div></div>

<span>1111111111</span>
<span>2222222222</span>
<span>3333333333</span>





<!--jQuery库必须加载，而且必须在bootstrap.min.js之前-->
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="http://cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</body>
</html>